[peterottaway]

As you have the original 5 it would seem better to go for the Mark 2 unless there is something about the new EOS 6D that you really,really want. For the sort of photography you do many pro photographers were very happy use the EOS 5D Mk 2 and some limitations in fps and focusing are not going cause you problems.



With the proviso that the second hand camera comes from a trusted source or that you are able to do some decent testing.